JP2017052011A - Device and method for bending plate-like metallic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method for efficiently and highly accurately bending (cylindrical bending) a plate-like metallic material, such as an outside plate of an aircraft, at a predetermined curvature by using a relatively simple and inexpensive configuration.SOLUTION: A device 1 for bending a plate-like metallic material includes: adsorptive means (adsorbing disks 10) caused to adsorb so as to be attachable to and detachable from a surface of a plate-like metallic material 3, at a front end of the device; and a plurality of extension means (servo screw jacks 20A-20G) whose base ends are mounted to a device base (a bed 2) and which can be extended and contracted by a length from the base end to the adsorptive means. Accordingly, the device causes the adsorptive means to adsorb to the surface of the plate-like metallic material 3 and extends/contracts the extension means in this state, in applying bending deformation to the plate-like metallic material 3 and shaping it.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technology for bending a metal plate, for example, a plate-like metal material (plate-like workpiece) used as an outer plate of an aircraft into an arc shape (cylindrical shape) with a predetermined curvature.

  Conventionally, the outer core of an aircraft (transverse cross section is substantially cylindrical) is connected to several aircraft outer plates (for example, 2 to 10 mm × width 2.5 m × length 6 m to 10 m) bent at a predetermined curvature. Since it is obtained by making it into a cylindrical shape, the outer plate material (plate-shaped material) cut out to a predetermined size is chip-formed by a large press brake (molding machine) one by one (3 points at intervals of about 20 mm) Bending (refer to FIG. 8) is repeated about 125 times, and if there is a curvature adjustment, the number of times is more than that), and a single contour of about R3000 mm (cylindrical bending, constant curvature bending) is used. . And the outer core of an aircraft is obtained by connecting together a plurality of outer plate materials (plate-like materials) molded to a predetermined curvature.

  Here, in order to reduce the weight of the aircraft outer plate, a plurality of pocket grooves (dents) are formed on the inner side (punch side) where the cylinder is bent, and there are several patterns for the shape of these pocket grooves (dents). There is a fact that it exists (see reference numeral 3A in FIG. 1B, FIG. 8).

  When cylindrically forming a portion with such pocket grooves (dents), as shown in FIG. 8, a plate material (cardboard (filler: hardness close to the plate), etc.) corresponding to the size and shape of each pocket groove is used in advance. In the pocket groove (embedding, fitting) (see, for example, Patent Document 1, Patent Document 2, etc.), and molding is performed in a state where unevenness is eliminated (thickness is made uniform). Contour molded products (cylindrical bending molded products with a predetermined curvature) are obtained.

JP 2012-213792 A JP 2011-194426 A

Here, in order to obtain a predetermined contour (curvature, contour), the operator needs to measure the contour and finely adjust the punch push-in amount every several press operations.
Fine adjustment of the punch push-in amount requires fine adjustment of the thickness of the cardboard (filler), and the work itself for embedding the cardboard in the pocket groove is complicated and requires a lot of time. However, since a lot of time is spent on the fine thickness adjustment (fine height adjustment) of the cardboard, for example, it takes 4 hours to form and complete one outer plate, for example. There is the actual situation.

  In addition, aircraft outer plate materials (plate-like materials) have a width of about 2.5 m and a length (longitudinal dimension) of about 6 to 10 m, although the plate thickness is as thin as about 2 to 10 mm. Since it is a very large part and bends by its own weight after molding, it is difficult to accurately inspect whether a predetermined curvature is obtained even if the contour is measured in that state, and there is a situation that requires skill is there.

  Also, in order to prevent the outer plate material from being scratched during molding, rubber is wrapped around the punch, and the cover plate (member softer than the outer plate material) is laid on the die, Since the molding accuracy also changes due to the deterioration with time, there is a situation that it is difficult to perform molding with a constant accuracy for a long time. Further, in the chip forming method, since the distance between the fulcrum before and after the die (see FIG. 8) is narrow, the load for giving deformation to the material becomes large, and high capacity is required for the press.

  In addition, since the outer plate is conventionally formed by a chip forming method using a press brake (molding machine), a frontage of 10 m or more (column) is required to accept an outer plate material having a length dimension (longitudinal dimension) of about 6 to 10 m. A large press brake with an interval) was required.

  For this reason, the slide (punch) of the press brake is bent as shown in FIG. 7, so that the press brake slide (punch) becomes enormous in order to ensure rigidity (inhibition of bending in the longitudinal direction), increasing mass, and increasing operating energy. As a result, it takes a long time to store the operating energy, and it is necessary to take a long operating cycle.

  In cylindrical bending of outer panels of aircraft, work that used to take a lot of work (formation work while embedding in cardboard pocket grooves or fine adjustment of cardboard thickness), and materials It is considered that the press brake (molding machine) and the like, whose size became a frontage and increased in size, are caused by the adoption of a molding method by three-point pressing (FIG. 8) by the chip forming method.

  Because of this, no matter what pattern pocket grooves are formed, pocket groove filling work is unnecessary, and product shapes can be obtained in several molding steps. It is desirable to construct a new molding method that is unnecessary.

  The present invention has been made in view of the above-described circumstances, and has a relatively simple and low-cost configuration, and efficiently and accurately forms a plate-shaped metal material such as an outer plate of an aircraft with a predetermined curvature. It is an object of the present invention to provide an apparatus and a method for bending a sheet metal material that can be (cylindrical bending).

For this reason, the present invention
In a plate metal material bending apparatus for bending a plate metal material,
The tip is provided with a suction means for detachably adsorbing to the surface of the plate-shaped metal material, the base end is attached to the apparatus base, and has a plurality of expansion / contraction means that can extend and contract the length from the base end to the suction means,
The plurality of expansion / contraction means are arranged at positions where the adsorption means can adsorb the outer surface of the bending of the plate-shaped metal material, and the base end of each expansion / contraction means is the plate-shaped metal with respect to the apparatus base. It is pivotally mounted in a plane parallel to the bending section of the material,
At the time of bending the plate-shaped metal material, the adsorption means is adsorbed on the outer surface of the plate-shaped metal material, and the expansion / contraction means is expanded and contracted to give the plate-shaped metal material bending deformation. It is characterized by doing.

  In the present invention, the suction means may be swingably attached to the tip of the expansion / contraction means.

In the present invention, a plurality of clamping means for releasably clamping the end portion of the plate-like metal material in the thickness direction is provided on both sides in the width direction of the plate-like metal material and in a direction perpendicular to the bending cross section,
The end of the plate-shaped metal material is rotated with respect to the apparatus base while the end of the plate-shaped metal material is clamped in the thickness direction by the clamping means, and is installed in a direction perpendicular to the width direction and the bending section of the plate-shaped metal material. The adsorption means included in the expansion / contraction means is adsorbed on the surface of the plate-shaped metal material, and in this state, the expansion / contraction means is expanded and contracted to give bending deformation to the plate-shaped metal material. it can.

In the present invention, the clamping means may be configured to be movable in the width direction of the plate-like metal material.
In the present invention, the expansion / contraction means may be configured to control the expansion / contraction amount.

  In the present invention, the plurality of expansion / contraction means are expanded and contracted in the same direction to bend and deform the plate-shaped metal material, and then reversely from the same direction in order from the inner expansion / contraction means toward the outer expansion / contraction means. It can be characterized in that it is formed by expanding and contracting in a direction to give bending deformation to the plate-shaped metal material.

In the present invention, the expansion and contraction means installed in the direction perpendicular to the width direction and the bending section of the plate-like metal material are arranged in a staggered pattern when viewed from the vertical direction. it can.
8. The method according to claim 1, further comprising: a 3D shape measuring machine capable of measuring a contour of the plate-like metal material in a state of being placed on the suction means from above. A bending apparatus for a plate-like metal material according to claim 1.

The method for bending a sheet metal material according to the present invention is as follows.
Adsorbing means for detachably adsorbing to the surface of the plate-like metal material is provided at the tip, the base end is attached to the device base, the length from the base end to the suction means can be expanded and contracted, and the base end in the molding direction Using a plate-shaped metal material bending apparatus having a plurality of expansion and contraction means configured to be pivotable,
While adsorbing the adsorbing means on the surface of the plate-shaped metal material, in the state, the expansion and contraction means is expanded and contracted to give the plate-shaped metal material bending deformation,
The plurality of expansion / contraction means are expanded and contracted in the same direction to bend and deform the plate-like metal material, and then are expanded and contracted in the direction opposite to the same direction in order from the inner expansion / contraction means to the outer expansion / contraction means. The sheet metal material is formed by bending the expansion / contraction means according to the bending of the sheet metal material, and bending the plate metal material.

A plurality of clamping means for releasably clamping the end of the plate-shaped metal material in the thickness direction are provided on both sides in the width direction of the plate-shaped metal material and in a direction perpendicular to the bending cross section,
An adsorption means for detachably adsorbing to the surface of the plate-shaped metal material is provided at the tip so as to be swingable, the base end is attached to the apparatus base, the length from the base end to the adsorption means can be expanded and contracted, and the base Using an apparatus for bending a plate-like metal material having a plurality of expansion and contraction means whose ends are configured to be pivotable in a plane parallel to the bending section,
The adsorption means is adsorbed on the surface of the plate-shaped metal material, and in that state, the expansion / contraction means is expanded and contracted to give bending deformation to the plate-shaped metal material,
It is characterized in that both ends of the plate-like metal material are bent and deformed by the clamping means.

  According to the present invention, it is possible to form a plate-shaped metal material such as an outer plate of an aircraft with a predetermined curvature (cylindrical bending) with high accuracy and with a relatively simple and low-cost configuration. An apparatus and method for bending a sheet metal material that can be provided can be provided.

(A) is a top view (top view) of the plate-shaped metal material bending apparatus according to the present embodiment, and (B) is a plate-shaped metal material formed by the same plate-shaped metal material bending apparatus. It is the top view (top view) shown partially, (C)-(E) is the side view which looked at the bending apparatus of the same plate-shaped metal material from the width direction. (A)-(F) is a side view explaining step 1-step 6 of the shaping | molding process in the bending shaping | molding apparatus (method) of the plate-shaped metal material which concerns on embodiment same as the above. (A)-(E) are the side views explaining step 7-step 11 of the formation process in the bending apparatus (method) of the plate-shaped metal material which concerns on embodiment same as the above. (A) is a side view for explaining a state of pivoting (swing angle) control by a servo motor of a servo screw jack with respect to a bed of a plate-shaped metal material bending apparatus according to the embodiment; It is a side view explaining the mode of the automatic pivot (swing angle) control by the spring of the servo screw jack with respect to a bed. (A) is the side view which expands and shows the structural example of the clamp combined bender of the bending forming apparatus of the plate-shaped metal material which concerns on embodiment same as the above, (B) is the top view which extracted and showed the part ( FIG. (A) is a side view for explaining a forming method in the case where both ends of a plate-shaped metal material are simultaneously bent and formed with a predetermined curvature by a servo screw jack and a clamp / bender of a plate-shaped metal material bending apparatus according to the embodiment. It is a figure and (B) is a side view explaining the shaping | molding method in the case of carrying out the bending shaping | molding of the end of a plate-shaped metal material by predetermined curvature. (A) is the figure (figure for demonstrating the width of a frontage) which looked at the conventional press brake from the feed direction (length direction) of plate-shaped metal material, (B) is a side view of (A). is there. It is a side view for demonstrating the conventional cylindrical bending method by three-point bending.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a plate-shaped metal material bending apparatus and bending method according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the embodiments described below.

  The inventors have found that there are a plurality of pocket grooves (dents) of various shapes on the inner surface (center side of the radius of curvature) of the cylindrical outer plate of the aircraft, but the outer surface (opposite surface). Paying attention to the fact that there is no pocket and flat, the outer surface of the cylindrical bend (opposite the center of the radius of curvature) is attracted and pulled, and this pulling forces the outer plate material (plate-like material) to be displaced. A method of bending into a cylindrical shape (giving a predetermined curvature) was provided.

  Adsorption is performed by an adsorption board (vacuum adsorption, magnetic adsorption, etc.), but the position in the height direction of the adsorption board (vertical direction position in Fig. 2) can be controlled by a servo screw jack (actuator with position control). Is done.

  Specifically, as shown in FIGS. 1C to 1E and FIGS. 2 to 4, in the bending apparatus 1 for plate-like material according to the present embodiment, the suction disk 10 (in the case of vacuum suction) A plurality of servo screw jacks 20A to 20G, each having a suction cup) attached to the tip, are attached to the bed 2 via pivots 21a to 21g.

  The suction disk 10 corresponds to an example of the suction unit according to the present invention, and the servo screw jacks 20A to 20G correspond to an example of the expansion / contraction unit according to the present invention. The bed 2 corresponds to the device base according to the present invention.

In the present embodiment, the plate-like material (plate-like metal material) 3 serving as a raw material for an aircraft outer plate or the like is a metal material such as ultra-super duralumin (2524 T3), for example, as shown in FIGS. As shown in (B), for example, it has a size of about 2 to 10 mm in thickness, 2.5 m in width, 6 m to 10 m in length. As shown in FIG. 1B, a plurality of pocket grooves (dents) 3A having various shapes are formed (engraved) on the upper surface of the plate-like material 3.

  As shown in FIGS. 1C, 2, and 4, the servo screw jacks 20 </ b> A to 20 </ b> G have a cylindrical circumferential direction of the plate-like material 3 bent into a cylindrical shape (arc-like shape). Are arranged along the width direction). The servo screw jacks 20A to 20G are pivotally supported by the pivot shafts 21a to 21g, and the longitudinal center axis (stretching direction central axis) of the servo screw jacks 20A to 20G is a plate shape bent into a cylindrical shape with a predetermined curvature. The material 3 is configured to be pivoted toward the center of its radius of curvature (along the normal direction of the cylinder).

Further, as shown in FIG. 1A, the servo screw jacks 20 </ b> A to 20 </ b> G are provided in a plurality of rows in the length direction of the plate-like material 3. In the present embodiment, servo screw jacks 20H to 20M are provided between the servo screw jacks 20A to 20G and the adjacent servo screw jacks 20A to 20G in the length direction. Further, in the width direction, the center position of the suction disk 10 in the length direction is such that the servo screw jack 20H is between the servo screw jacks 20A and 20B, the servo screw jack 20I is between the servo screw jacks 20B and 20C, and so on. Are arranged in a staggered manner so that they can be as close as possible.
In the following, the servo screw jacks 20A to 20G will be described as representative of a plurality of servo screw jacks.

  In the plate-shaped material bending apparatus 1 having such a configuration, the plate-shaped material 3 is formed into a cylindrical shape (arc shape) with a predetermined curvature by the following steps.

  In step 1 (S1 in FIG. 2, the same applies hereinafter), as shown in FIGS. 2 (A) and 1 (C), the height positions of the suction disks 10 of the servo screw jacks 20A to 20G (each servo screw jack). The amount of expansion / contraction of 20A to 20G) is adjusted to be flat. Such a state is a standby state, and in this standby state, the plate-like material 3 is loaded and set on the suction disk 10.

  In step 2 (S2), as shown in FIG. 2 (B), the lower surface of the plate-like material 3 (the surface without the pocket groove) is adsorbed by the adsorption disk 10.

In step 3 (S3), as shown in FIGS. 2 (C) and 1 (D), both ends in the width direction of the plate-like material 3 are supported from below by the clamp / benders 30A and 30B, and by the suction plate 10 With the plate-like material 3 adsorbed, the rods 20a to 20g of the servo screw jacks 20A to 20G are lowered by position control (control of the amount of expansion / contraction of the servo screw jacks 20A to 20G) to a predetermined position where a predetermined curvature is obtained. (Shrink) and lower the suction plate 10. As a result, the vicinity of the center in the width direction of the plate-like material 3 is subjected to plastic working (bending into a cylindrical shape) to a predetermined curvature (R1000 mm or so).
Since ultra-duralumin has a large spring back, a curvature of about R3000 mm can be obtained when it is opened by deforming about R1000 mm (see FIG. 1D).

Here, the clamp and benders 30A and 30B supporting the both ends in the width direction of the plate-like material 3 from below move inwardly in accordance with the bending deformation of the plate-like material 3, so In response to this, it is configured to be movable inward.
Specifically, the clamp / bender 30 </ b> A (30 </ b> B) is configured as shown in FIGS. 5A and 5B, and the horizontal movement in the width direction is the clamp / bender 30 </ b> A that is screwed into the rotary screw 301. The main body base 302 can be achieved by using a linear guide mechanism or the like configured to enable relative position control with respect to the bed 2 by rotating the rotary screw 301 by the servo motor 303.

In step 4 (S4), as shown in FIG. 2 (D), both ends in the width direction of the plate-like material 3 are sandwiched between the clamp / benders 30A and 30B, and in FIG. By rotating the right-side clamp / bender 30B by a predetermined amount (predetermined rotation angle) in the counterclockwise rotation direction (rotation angle position control) while rotating the predetermined angle in the rotation direction, the respective curvatures at both ends in the width direction are respectively predetermined curvatures. Plastic processing (bending into a cylindrical shape) to (R1000 mm or so). At this time, the position of the servo screw jacks 20A to 20G is controlled by a preset control amount so that a predetermined curvature (about R1000 mm) is obtained near both ends in the width direction, and the position of the corresponding suction disk 10 is appropriate. It is controlled so that it becomes a position.
Here, the clamp / benders 30A and 30B correspond to an example of the clamping means according to the present invention.

As shown in FIGS. 2D, 5A, and 5B, the clamp / benders 30A and 30B include a claw portion (scissors) that is rotated by a servo motor 304 or the like around the rotation shafts 31A and 31B. ) 30a and 30b are rotated so that the width direction end portion of the plate-like material 3 is sandwiched between the base portions 30c and 30d. In this state, the crow portion is further rotated around the rotation shafts 31A and 31B. By rotating 30a, 30b and the base portions 30c, 30d by a predetermined amount (predetermined rotation angle) (rotational angle position control), plastic processing (bending in a cylindrical shape) is performed at both ends in the width direction to a predetermined curvature (R1000 mm). Molding).
As shown in FIG. 5A, each of the opposing surfaces of the crow portions (scissors) 30a, 30b and the base portions 30c, 30d has a curvature of about R1000 mm.

  In step 5 (S5), as shown in FIG. 2 (E), the suction disk 10 of the servo screw jack 20D located at the center in the width direction among the servo screw jacks 20A to 20G is raised by position control to obtain a predetermined curvature. The bending region at (R1000 mm or so) is expanded toward the end in the width direction.

  At this time, in order to achieve expansion toward the end in the width direction of the bending region with a predetermined curvature (about R1000 mm), the rotation angle position of the clamp / benders 30A and 30B is controlled by a preset control amount. At the same time, the position of the other servo screw jacks 20A to 20C and 20E to 20G is controlled by a preset control amount so that the position of the corresponding suction disk 10 becomes an appropriate position. ing.

  In step 6 (S6), as shown in FIG. 2F, the suction disk 10 of the servo screw jacks 20C and 20E adjacent to the servo screw jack 20D at the center in the width direction of the servo screw jacks 20A to 20G is positioned. The bending region with a predetermined curvature (about R1000 mm) is further expanded toward the end in the width direction by being raised by control.

  At this time, in order to achieve expansion toward the end in the width direction of the bending region with a predetermined curvature (about R1000 mm), the rotation angle position of the clamp / benders 30A and 30B is controlled by a preset control amount. At the same time, the position of the other servo screw jacks 20A, 20B, 20F, and 20G is controlled by a preset control amount so that the position of the corresponding suction disk 10 becomes an appropriate position. ing.

  In step 7 (S7), similarly, as shown in FIG. 3A, the suction disk 10 of the servo screw jacks 20B, 20C, 20D, 20E, and 20F among the servo screw jacks 20A to 20G is raised by position control. Then, the bending region with a predetermined curvature (about R1000 mm) is further expanded toward the end in the width direction. The clamp / benders 30A and 30B and the other servo screw jacks 20A and 20G are controlled in the same manner as in Step 6.

  In step 8 (S8), as shown in FIG. 3B and FIG. 1E, all the suction discs 10 of the servo screw jacks 20A to 20G are raised by position control, and at a predetermined curvature (about R1000 mm). The bending area is extended to the end in the width direction.

  In this way, after the servo screw jacks 20A to 20G (a plurality of expansion / contraction means) are expanded and contracted in the same direction (downward in FIGS. 2 and 3), the plate-shaped material 3 is bent and deformed (steps 3 and 4). ), The inner servo screw jack 20D (when there are two servo screw jacks 20H to 20M near the center (two in the case of 20J, 20K), the two) in order from the outer servo screw jacks 20A and 20G ( By gradually expanding and contracting in the direction opposite to the same direction (upward in FIGS. 2 and 3), the plate-shaped material 3 is subjected to bending deformation and molded (steps 5, 6, 7, and 8). Since the bending deformation at the curvature can be gradually expanded from the inside toward the outside, the plate-like material 3 can be precisely refined with a relatively small curvature evenly over the entire width direction. It can be well molded.

  In step 9 (S9), as shown in FIG. 3C, the bending region at the predetermined curvature (about R1000 mm) is reached to the end in the width direction in step 8, and the molding is completed. , 30B.

In step 10 (S10), as shown in FIG. 3D, the load acting on each rod 20a-20g of the servo screw jacks 20A-20G is detected by a load sensor or the like, and the load acting on each rod 20a-20g. Are controlled so that the rod positions (rod lengths) of the servo screw jacks 20A to 20G are equal. Thereby, it is possible to measure whether or not a predetermined contour (curvature, contour) is obtained by measuring the contour (curvature, contour) of the plate-like material 3 without bending due to its own weight.
For this reason, the actual contour (curvature, contour) can be obtained with higher accuracy than in the conventional case where the measurement is performed in a state where the plate-like material 3 is bent by its own weight.

  In the plate material bending apparatus 1 according to the present embodiment, there is no part such as a punch (slide) above the plate material 3 as in a press brake (molding machine). On the spot (in a state where the plate-like material 3 is placed on the suction disk 10 of the servo screw jacks 20A to 20G), the contour (curvature, contour) of the plate-like material 3 is converted into a 3D shape measuring machine 50 using a laser. Can be measured. For this reason, the contour measurement work is simplified compared to the conventional case where the contour (curvature, contour) of the plate-like material 3 is measured by moving it once from a press brake (molding machine) to a wide place for measurement. Therefore, it is possible to contribute to the reduction of work time and to improve the production efficiency.

  It is determined whether or not a predetermined contour (curvature, contour) is obtained based on the result measured in step 10 (S10). If the predetermined contour (curvature, contour) is not obtained, step Steps 3 to 10 are repeated, and the position control of the suction disk 10 of the servo screw jacks 20A to 20G is executed in consideration of the difference between the target value and the measured value so that a predetermined contour (curvature, contour) is obtained. .

  On the other hand, when a predetermined contour (curvature, contour) is obtained in step 10, the process proceeds to step 11 (S11), and as shown in FIG. 3 (E), the suction disk 10 of the servo screw jacks 20A to 20G. Is released, the plate-like material 3 is released, and is carried outside.

  Here, as shown in FIG. 2, FIG. 4, etc., the servo screw jacks 20A to 20G according to the present embodiment have rods 20a to 20g which are output portions thereof expanded and contracted with respect to the servo screw jacks 20A to 20G. It is configured to move up and down.

  Specifically, the amount of expansion and contraction of the rods 20a to 20g can be controlled by rotating a built-in screw while controlling the amount of rotation with an electric motor. And the suction cup 10 is attached to the front-end | tip of rod 20a-20g so that rocking is possible via a spherical joint, a universal joint, etc.

  Further, as shown in FIG. 4A, the servo screw jacks 20A to 20G are attached to the bed 2 so as to be pivotable around pivots 21a to 21g. For example, the pivot amount (rotation amount) by the servo motors 22a to 22g. ) Can be controlled.

  According to such a configuration, when the plate material 3 is sucked and bent by the suction disk 10, the expansion and contraction direction (center in the longitudinal direction) of the rods 20 a to 20 g in the normal direction with respect to the bending of the plate material 3. Therefore, the plate-like material 3 can be bent with a predetermined curvature efficiently and accurately.

  As shown in FIG. 4B, the servo screw jacks 20A to 20G are supported by the springs 23a to 23g so as to be pivotable about the pivots 21a to 21g, instead of the servo motors 22a to 22g. be able to.

  When the elastic force (restoring force) of the springs 23a to 23g is set to be relatively small (weak), when the plate-like material 3 is sucked and bent by the suction plate 10, the plate-like material 3 Following the bending, the expansion and contraction direction (the central axis in the longitudinal direction) of the rods 20a to 20g can be automatically matched with the normal direction, so that the plate-like material 3 can be efficiently and accurately provided with a simple configuration. Can be bent with a predetermined curvature.

  As described above, according to the plate-shaped material bending apparatus 1 according to the present embodiment, one surface side of the plate-shaped material 3 without performing cylindrical bending by three-point bending as in a conventional press brake. Since the plate material 3 is bent and formed by the method of deforming the plate-like material 3 by adsorbing the adsorbent by the adsorber 10 and moving the adsorber 10, the structure is simple and low-cost, and efficient. A plate-like material such as an aircraft outer plate can be formed with a predetermined curvature (cylindrical bending) with high accuracy.

  Further, according to the plate-shaped material bending apparatus 1 according to the present embodiment, unlike the conventional case, since the press brake that is enlarged to ensure rigidity (inhibition of bending in the longitudinal direction) is not used, the operating energy is reduced. As a result, the operating cycle can be shortened, so that the production efficiency can be improved.

  Further, in the chip forming method, since the distance between the fulcrum before and after the die (see FIG. 8) is narrow, the load for giving deformation to the material becomes large and the press needs high capacity. According to the plate-shaped material bending apparatus 1, since the distance between the fulcrums of load (between 30A and 30B) is large, it can be deformed with a relatively small load.

  As an example of the operation of the clamp / benders 30A and 30B, as shown in FIG. 6A (FIG. 2D, etc.), the both ends of the plate-like material 3 in the width direction are sandwiched. The plate-like material 3 can be bent and deformed with a predetermined curvature by turning the clamp / bender 30A counterclockwise and turning the left clamp / bender 30B clockwise.

  Further, as shown in FIG. 6B, the right clamp / bender 30A is rotated counterclockwise while the width direction end of the plate-like material 3 is sandwiched by the clamp / bender 30A, while the left An operation method of bending and deforming the right end side of the plate-like material 3 with a relatively small curvature can be assumed by releasing the clamp / bender 30B.

  In the present embodiment, vacuum suction can be used as the suction disk 10, and depending on the material of the plate-like material 3, magnetic suction using an electromagnetic magnet or the like can be used.

  In the present embodiment, the plate-like material 3 has been described by taking an aircraft outer plate as an example. However, the present invention is not limited to this, and a plate-like material that can be bent and deformed by being sucked by the suction disk 10. If it is material, it will not specifically limit including the presence or absence of a pocket groove | channel (dent).

  In the present embodiment, the case where the plate-like material 3 set substantially horizontally in FIG. 1, FIG. 2, FIG. 3, and FIG. The present invention is not limited to this, and can also be applied to the case where the plate-like material 3 is deformed with a convex curvature (lower is concave).

  Moreover, in this Embodiment, the contour (curvature, outline) of the plate-shaped material 3 after shaping | molding is measured using the 3D shape measuring machine 50 using a laser, and a predetermined | prescribed contour (curvature, outline) is obtained. Although the molding has been performed once or a plurality of times, the contour (curvature, contour) can be measured by other methods (for example, a method using a dial gauge or the like).

In the present embodiment, the clamp / benders 30A and 30B, which are clamping means, have been described as being provided at both ends in the width direction of the plate-like material 3, but both may be omitted depending on the required curvature. Or at least one can be omitted.
It is also possible to omit the rotating function of the clamp / benders 30A and 30B.

  The embodiment described above is merely an example for explaining the present invention, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Sheet metal material bending apparatus 2 Bed (apparatus base based on this invention)
3 Plate material (plate metal material)
3A pocket groove (dent)
10 Adsorption board (adsorption means according to the present invention)
20A-20G Servo screw jack (extension / contraction means according to the present invention)
20a-20g Rod 21a-21g Axis 22a-22g Servo motors 30A, 30B Clamp / bender (clamping means according to the present invention)
30a, 30b Crow part (scissors)
30c, 30d Base part

Claims (10)

In a plate metal material bending apparatus for bending a plate metal material,
The tip is provided with a suction means for detachably adsorbing to the surface of the plate-shaped metal material, the base end is attached to the apparatus base, and has a plurality of expansion / contraction means that can extend and contract the length from the base end to the suction means,
The plurality of expansion / contraction means are arranged at positions where the adsorption means can adsorb the outer surface of the bending of the plate-shaped metal material, and the base end of each expansion / contraction means is the plate-shaped metal with respect to the apparatus base. It is pivotally mounted in a plane parallel to the bending section of the material,
At the time of bending the plate-shaped metal material, the adsorption means is adsorbed on the outer surface of the plate-shaped metal material, and the expansion / contraction means is expanded and contracted to give the plate-shaped metal material bending deformation. An apparatus for bending a sheet metal material.   2. The plate-shaped metal material bending apparatus according to claim 1, wherein the suction means is swingably attached to a tip of the expansion / contraction means. A plurality of clamping means for releasably clamping the end portions of the plate-like metal material in the thickness direction are provided on both sides in the width direction of the plate-like metal material and in a direction perpendicular to the bending cross section,
The end of the plate-shaped metal material is rotated with respect to the apparatus base while the end of the plate-shaped metal material is clamped in the thickness direction by the clamping means, and is installed in a direction perpendicular to the width direction and the bending section of the plate-shaped metal material. The adsorption means included in the expansion / contraction means is adsorbed on the surface of the plate-shaped metal material, and the expansion / contraction means is expanded and contracted in this state to bend and deform the plate-shaped metal material. The bending apparatus for plate-like metal material according to 1.   The said pinching means is comprised so that a movement in the width direction of the said plate-shaped metal material is comprised, The bending forming apparatus of the plate-shaped metal material of Claim 3 characterized by the above-mentioned.   The plate-shaped metal material bending apparatus according to any one of claims 1 to 4, wherein the expansion / contraction means is configured to be capable of controlling an expansion / contraction amount.   The plurality of expansion / contraction means are expanded / contracted in the same direction to bend and deform the plate-like metal material, and then are expanded / contracted in the direction opposite to the same direction in order from the inner expansion / contraction means to the outer expansion / contraction means. 6. The apparatus for bending a plate-shaped metal material according to claim 1, wherein the plate-shaped metal material is formed by bending deformation.   The said expansion-contraction means installed in the direction orthogonal to the width direction of the said plate-shaped metal material and a bending cross section is arrange | positioned in zigzag form, when it sees from a perpendicular direction. 6. A bending apparatus for a plate-shaped metal material according to any one of 6 above.   The 3D shape measuring machine capable of measuring a contour of the plate-like metal material in a state of being placed on the adsorption means from above is provided. Sheet metal bending equipment. Adsorbing means for detachably adsorbing to the surface of the plate-like metal material is provided at the tip, the base end is attached to the device base, the length from the base end to the suction means can be expanded and contracted, and the base end in the molding direction Using a plate-shaped metal material bending apparatus having a plurality of expansion and contraction means configured to be pivotable,
While adsorbing the adsorbing means on the surface of the plate-shaped metal material, in the state, the expansion and contraction means is expanded and contracted to give the plate-shaped metal material bending deformation,
The plurality of expansion / contraction means are expanded and contracted in the same direction to bend and deform the plate-like metal material, and then are expanded and contracted in the direction opposite to the same direction in order from the inner expansion / contraction means to the outer expansion / contraction means. A method of bending a plate-shaped metal material, characterized in that the plate-shaped metal material is bent and deformed by pivoting an expansion / contraction means according to the bending of the plate-shaped metal material. A plurality of clamping means for releasably clamping the end of the plate-shaped metal material in the thickness direction are provided on both sides in the width direction of the plate-shaped metal material and in a direction perpendicular to the bending cross section,
An adsorption means for detachably adsorbing to the surface of the plate-shaped metal material is provided at the tip so as to be swingable, the base end is attached to the apparatus base, the length from the base end to the adsorption means can be expanded and contracted, and the base Using an apparatus for bending a plate-like metal material having a plurality of expansion and contraction means whose ends are configured to be pivotable in a plane parallel to the bending section,
The adsorption means is adsorbed on the surface of the plate-shaped metal material, and in that state, the expansion / contraction means is expanded and contracted to give bending deformation to the plate-shaped metal material,
A method for bending and forming a plate-shaped metal material, wherein both ends of the plate-shaped metal material are bent and deformed by the clamping means.

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